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September 29th, 2016, 04:33 AM   #1
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Additions of Missing Numbers

Hi all
Silly question, but what would be the best way of working these out?? I can get to the answer via trial and error but each ones takes me ages. Is there a method?
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mikeinitaly is offline  
September 29th, 2016, 05:28 AM   #2
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Working from right to left, do the appropriate addition or subtraction.
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